{"id":1902428,"url":"https://alion.io/job/roadrunner-venture-studios-experimental-fluid-mechanics-two-phase-flow-nozzle-testing-contract","title":"Experimental Fluid Mechanics: Two-Phase Flow & Nozzle Testing (Contract)","company":{"id":2339117,"name":"Roadrunner Venture Studios","domain":"roadrunnerventurestudios.com","url":"https://alion.io/company/roadrunnerventurestudios","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-24T06:02:35Z"}},"role":"Field & Service","role_family":"Field & Service","seniority":null,"employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":40000,"max_usd":90000,"period":"year","method":"role_country_seniority_unknown","sample_n":18483},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-06-29T16:29:37Z","employer_posted_date":"2026-06-29","last_verified_at":"2026-10-24T16:11:27Z","board_verified":true,"closed_at":null,"days_open":117,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":116},"description":"Overview\nRoadrunner Venture Studios is seeking a contract Subject Matter Expert (SME) to develop and execute an experimental test program for a proprietary nozzle for the generation of two-phase flow targeting intermediate-temperature energy systems. The primary objective is to establish a reliable, repeatable methodology for thrust measurement, characterize the two-phase flow exiting the nozzle, and reduce system variables so testing is focused on nozzle performance.\nScope of Work\nThe contractor will:\nDevelop and execute a test plan for a two-phase nozzle operating with geothermal working fluids and experimental refrigerants.\n\nDesign and validate a reliable thrust measurement system.\n\nCharacterize the spray leaving the nozzle, including gas-to-liquid ratio, droplet concentration, droplet distribution, and mixed-phase flow behavior.\n\nMeasure and analyze flow characteristics, pressure, temperature, and other critical performance parameters.\n\nReduce experimental variables to isolate nozzle performance and improve test repeatability.\n\nRecommend and implement instrumentation and test fixtures required to produce high-confidence data.\n\nAnalyze results and provide recommendations to improve nozzle performance and overall test methodology.\n\nPreferred Qualifications\nM.S. or Ph.D. in Mechanical Engineering or related field preferred.\n\nHands-on experience with two-phase flow, organic rankine cycle systems, refrigerant testing, or nozzle/thrust measurement.\n\nStrong experimental background with fluid systems, instrumentation, and test development.\n\nExperience with compressor and refrigerant line design, HVAC or process engineering, or propulsion testing is highly desirable.\n\nAbility to travel to Albuquerque, New Mexico, to support testing.","description_format":"text","description_chars":1757,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Venture 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